Munin contributed plugins

#!/bin/bash

# -*- sh -*-

<< END

esxcli_env_ - Plugin to monitor ESXi host temperature or power via esxcli.

    This plugin should be linked as esxi_env_temp or esxi_env_power.

Configuration variables (/etc/munin/plugin-conf.d/):

    Munin native:

        host_name - Name of you ESXi host as defined in munin.conf

        timeout - Plugin specific timeout

    Plugin specific:

        env.esxi_host - (REQUIRED) hostname/ip esxcli connect to

        env.esxi_user - (REQUIRED) ESXi username to connect

        env.esxi_password - (REQUIRED) password for user given above

        env.cache_file - path to cache file (we do not want two or more sequential reconnections to ESXi host)

        env.cache_max_age - if cache file is an older than this, we will fetch new data from ESXi host

        env.warning - warning limit

        env.critical - critical limit

        env.margin_warning - warning limit for temperature margin values

        env.margin_critical - critical limit for temperature margin values

Please be aware that Munin has a 10 second default timeout on plugins. On some hosts esxcli can take longer

than that, but you could set timeout in plugin config.

by Oleg Selin <oleg.selin@gmail.com>

#%# family=auto

#%# capabilities=autoconf suggest

END

# Set default config if not given

if [ -z "$cache_file" ]; then cache_file="/tmp/munin.esxcli_env.cache"; fi

if [ -z "$cache_max_age" ]; then cache_max_age="120"; fi

case $1 in

    autoconf)

        type -p esxcli &>/dev/null ||

          { echo "no (missing esxcli command)" && exit 0; }

        echo "yes"

        exit 0;;

    suggest)

	echo "temp"

        echo "power"

        exit 0;;

esac

# Is connection information given?

if [ -z "$esxi_host" ] || [ -z "$esxi_user" ] || [ -z $esxi_password ];

then

    echo "Please configure connection information"

    exit 1

fi

### PROCESSING ###

# Case insensetive regex

shopt -s nocasematch

# Determine sensor type

type=${0##*/esxcli_env_}

case "$type" in

    temp)

	regex="(temp.*degrees|therm.*degrees)"

	graph_title="ESXi host temperatures"

	graph_vlabel="C"

	;;

    power)

	regex="([0-9]\\\\s?v.* volts )"

	graph_title="ESXi host voltages"

	graph_vlabel="V"

	;;

    *)

	echo "This plugin should be linked as esxi_env_temp or esxi_env_power"

	exit 1

esac

# Get ipmi sdr data

if [ -f $cache_file ]; then cache=`stat --printf=%Y $cache_file`; fi

if [ `expr $cache + $cache_max_age` -lt `date +%s` ]

then

	data=`esxcli -s $esxi_host -u $esxi_user -p $esxi_password hardware ipmi sdr list`

	echo "$data" > $cache_file

else

	data=`cat $cache_file`

fi

# Convert to array

OLDIFS=$IFS

IFS=$'\n'

sensor_names=(`echo "$data" | awk -v regexp="${regex}" 'BEGIN{IGNORECASE=1;FS="\\\\s{2,}"} $0~regexp {gsub(" ","_",$2);print tolower($2)}'`)

sensor_labels=(`echo "$data" | awk -v regexp="${regex}" 'BEGIN{IGNORECASE=1;FS="\\\\s{2,}"} $0~regexp {print $2}'`)

sensor_values=(`echo "$data" | awk -v regexp="${regex}" 'BEGIN{IGNORECASE=1;FS="\\\\s{2,}"} $0~regexp {print $4}'`)

IFS=$OLDIFS

# Array holds all sensor indexes

indexes=${!sensor_names[@]}

# Processing

case $1 in

    config) # Config run

	echo "graph_title $graph_title"

	echo "graph_vlabel $graph_vlabel"

	echo "graph_category sensors"

	for index in $indexes; do

	   echo ${sensor_names[$index]/./,}.label ${sensor_labels[$index]}

	   if [[ ${sensor_names[$index]} =~ margin ]]; then

		echo ${sensor_names[$index]/./,}.warning $margin_warning

		echo ${sensor_names[$index]/./,}.critical $margin_critical

	   else

	       echo ${sensor_names[$index]/./,}.warning $warning

 	       echo ${sensor_names[$index]/./,}.critical $critical

	   fi

	done

        exit 0;;

    *) # Normal run

	for index in $indexes; do

	    echo ${sensor_names[$index]/./,}.value ${sensor_values[$index]}

	done

esac